Stores that specialise in high-quality denim can sometimes offer hemming on a vintage Union machine, which will give you a chain-stitched hem, as good as the original. If there is not one near you, you can measure your jeans and mail them in. Here in England I use Son of a Stag, in London. In New York there is Blue in Green. Self Edge can do it at all of their stores. And there are other places as well. I think it is worth the effort.